John F. Deasy

John F. Deasy: Attorney with Marshall Dennehey
  • Shareholder at Marshall Dennehey
  • Union Trust Building, 501 Grant Street, Suite 700, Pittsburgh, PA 15219
    View John F. Deasy's office location
  • John F. Deasy is a shareholder with Marshall, Dennehey, Warner, Coleman & Goggin. He is a member of the firm's Casualty Department and concentrates his practice in the area of general liability including premises liability; sports, amusements, and entertainment liability; product liability; liquor liability; transportation liability; and insurance fraud.
  • Overall Rating

    4.5
    .
    13 Reviews
  • Overall Rating

    4.5
    .
    13 Reviews
  • Profile Visibility [ i ]
    • #569 in weekly profile views out of 13,435 Attorneys in Pittsburgh, PA
    • #84,805 in weekly profile views out of 2,343,183 total attorneys Overall
Attorney Awards
About Attorney Awards

Biography

John practices in the firm's Casualty Department. He concentrates his practice in the area of general liability including premises liability, product liability, construction accident and defects, fire and explosions, amusements, sports and entertainment liability, liquor liability, auto, and trucking and transportation litigation. Additionally, John has experience in cases involving elevators, escalators, moving walkways, electronic doorways, cranes and lifts.

An active trial attorney since 1992, he has represented property owners and managers of large shopping malls, sports and entertainment centers, amusement parks, stadiums, arenas, office buildings, residential complexes, hotels, bars and restaurants.

John has represented project owners, contractors, trucking companies, bus companies, highway contractors and parking garage owners and operators along with product manufacturers, distributors and retailers including department stores. He has also represented many small business owners such as barber shops, auto repairs shops and sub-contractors.

John has practiced and tried cases in many of the state courts in western Pennsylvania and federal court. John received a Bachelor of Arts in Political Science from the University of Pittsburgh in 1987. In 1991, he received his juris doctor from the University of Pittsburgh School of Law.

Honors & awards

AV Preeminent by Martindale-Hubbell

The Best Lawyers in America, Personal Injury Litigation - Defendants; Product Liability Litigation - Defendants
2025-2026

Pennsylvania Super Lawyers
2017-2019

Year joined

2002

Thought Leadership

98 Marshall Dennehey Attorneys Recognized in the 2026 Editions of The Best Lawyers in America and the Best Lawyers: Ones to Watch in America

August 20, 2025
Marshall Dennehey is proud to highlight the firm’s 98 attorneys who have been recognized in the 2026 editions of The Best Lawyers in America and the Best Lawyers: Ones to Watch in America. Less than 6% of all practicing lawyers in the U.S.

Pennsylvania’s Relaxed Standard for Proving Intoxication in Civil Cases

Pittsburgh
General Liability
Hospitality & Liquor Liability
December 10, 2018
Key Points: Defense Digest, Vol. 24, No. 4, December 2018. Defense Digest is prepared by Marshall Dennehey Warner Coleman & Goggin to provide information on recent legal developments of interest to our readers.

Classes/ Seminar Taught

Defending Roller Skating Claims, Roller Skating Association (RSA) Chapter Meeting, Pittsburgh, PA, October 24,, 2022

Areas of Practice (5)

  • Amusements, Sports & Recreation Liability
  • General Liability
  • Product Liability
  • Hospitality & Liquor Liability
  • Trucking & Transportation Liability

Education & Credentials

University Attended:
University of Pittsburgh, B.A., Political Science, 1987
Law School Attended:
University of Pittsburgh School of Law, Pittsburgh, Pennsylvania, J.D., 1991
Year of First Admission:
1991
Admission:
1991, Pennsylvania; 1991, U.S. District Court Western District of Pennsylvania; U.S. Court of Appeals 3rd Circuit
Memberships:

Associations & Memberships

Allegheny County Bar Association

Reported Cases:
Published Works: Pennsylvania's Relaxed Standard for Proving Intoxication in Civil Cases, Defense Digest, December 2018, Vol. 24, No. 4
ISLN:
900105331

Peer Reviews

4.5/5.0 (13 reviews)
Martindale-Hubbell® AV Preeminent Rating Badge
  • Legal Knowledge

    4.5/5.0
  • Analytical Capability

    4.4/5.0
  • Judgment

    4.5/5.0
  • Communication

    4.5/5.0
  • Legal Experience

    4.7/5.0
Peer reviews submitted prior to 2008 are not displayed.

Client Reviews Write a Review

Location

Contact John F. Deasy

Contact Information:

412-803-1188  Fax

www.marshalldennehey.com

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